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20687 Saletore (1999 VQ60)
Classification: Main-belt Asteroid          SPK-ID: 2020687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08838234236218752 3.0965e-08  
a 2.736227748934557 1.3111e-08 au
q 2.494393531247305 8.8888e-08 au
i 9.891488892899334 4.4736e-06 deg
node 48.65090443448165 2.2038e-05 deg
peri 247.4956890898261 3.8129e-05 deg
M 289.6120278990342 3.2913e-05 deg
tp 2459323.738247640659
(2021-Apr-19.23824764)
0.00015153 TDB
period 1653.205308766673
4.53
1.1883e-05
3.253e-08
d
yr
n .2177587974651302 1.5652e-09 deg/d
Q 2.978061966621808 1.427e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      14112 days (38.64 yr)  
   first obs. used      1981-10-30  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:45:07  

Additional Information
 Earth MOID = 1.49873 au 
 Jupiter MOID = 2.17947 au 
 T_jup = 3.325 
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Orbital Elements at Epoch 2457318.5 (2015-Oct-23.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08729063324813273 3.0967e-08  
q 2.497930268083989 8.8773e-08 au
tp 2457668.613941212958
(2016-Oct-07.11394121)
0.00015163 TDB
node 48.66614508325594 2.2035e-05 deg
peri 247.2055577077586 3.8426e-05 deg
i 9.891309415901748 4.4734e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1556  
   data-arc span      14112 days (38.64 yr)  
   first obs. used      1981-10-30  
   last obs. used      2020-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50919  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:45:07  

Additional Information
 Jupiter MOID = 2.17947 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.589249741699638E-16 -2.725804289064416E-15 4.348782420760365E-14 -6.17762001309866E-15 3.914440690108077E-14 1.877752210785604E-15
q -2.725804289064416E-15 7.880700445834878E-15 7.668941721831622E-14 1.741382244274132E-14 -7.589199506759918E-14 -4.86738884567117E-15
tp 4.348782420760365E-14 7.668941721831622E-14 2.299019013451631E-8 1.738489153253377E-11 4.787801717883781E-9 1.650826278055004E-12
node -6.17762001309866E-15 1.741382244274132E-14 1.738489153253377E-11 4.855540830793068E-10 -4.745715159746139E-10 -3.358740900929476E-11
peri 3.914440690108077E-14 -7.589199506759918E-14 4.787801717883781E-9 -4.745715159746139E-10 1.476582050027056E-9 3.350046831101395E-11
i 1.877752210785604E-15 -4.86738884567117E-15 1.650826278055004E-12 -3.358740900929476E-11 3.350046831101395E-11 2.001145088134939E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO474037  
diameter diameter 3.771 km 0.750 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20687 Saletore           Discovered 1999 Nov. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Yogesh Saletore (b. 1987) was awarded second place in the 2004 Intel International Science and Engineering Fair for his computer science project. He attends the Olympia High School, Olympia, Washington, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

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Alternate Designations
 1999 VQ60 = 1981 UR4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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